I have an old Dolphin Atlantis. I also have a pool with fiberglass walls and a concrete bottom. I painted the bottom with epoxy paint about 3 seasons ago. Last year, I hardly used the robotic cleaner at all, and the paint looked fantastic. This year, I've had the robot in all season, and the paint is chipping all over the pool, not just in one spot. I noticed the robot climbs the walls, and then floats back down to the bottom, sometimes sideways. I suspect that the corners of the robot may be chipping my pool paint when it hits the bottom. I am wondering if anyone else has experienced this?